Gage-cock.



UNITED STATES Patented July 19, 1904.

PATENT OFFICE.

SAMUEL J. DUNLOP, OE NEWARK, OHIO, ASSIGNOR OF ONE-HALF` TO WILLIAM M.GLENN, OF NEWARK, OHIO.

GAGE-COCK.

SPECIFICATION forming part of Letters Patent No. 765,229, dated July 19,1904.

Application filed March 22, i904.

To all w/wm/ zit may concern:

Be it known that I, SAMUEL J. DUNLOP, a citizen of the United States,residing at Newark, in the county of Licking and State of Ohio, haveinvented certain new and useful Improvements in Gage-Cocks; and I dohereby declare the following to be a full, clear, and eXact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to valves or gage-cocks; and it consists of certainnovel features of combination and construction of parts, the preferredform whereof will be hereinafter clearly set forth, and pointed out inthe claims.

The prime object of my invention, among others, is to provide a valve orgage-cock which will be found thoroughly reliable in the performance ofits oflce and which at the same time will possess great capacity toresist wear and consequent leakage.

A further object of my invention is to provide means to compensate forthe wear incident to moving one metal part upon another.

Another object is to convey the steam, water, or other liquid throughthe valve on themost direct or shortest line without in any Wise comingin contact with the valve and the seat thereof.

Other objects and advantages will be hereinafter made clearly apparent,reference being had to the accompanying drawings, which are made a partof this application, and in which- Figure l shows a longitudinal centralsecl tion of my valve as applied to an ordinary gage-cock. Fig. Qis aperspective view showmg the valve removed from its seat. Fig. 3

vis a sectional view of the valve and its seat,

showing another form of materialization of my invention. g

The various details and coperating accessories will for convenience bedesignated by numerals, the same numeral applying to a similar partthroughout the several views.

While I shall illustrate my invention as applied to use upon an ordinarygage-cock for steam-engines, it will be understood that the essentialfeatures of my invention may be Serial No. 199,383. (No model.)

utilized in a great variety of ways, inasmuch as my form of valve willbe found eflicient and valuable not only as a steam gage-cock, but as avalve for the control of steam, water, oil, or gas, inasmuch as my valvewill be found particularly advantageous and eflicient for the control ofall liquids or iuids, especially those charged with gritty substances,as oil, water, &c. It therefore follows that my form of valve will beespecially desirable when used as a blow-off valve for discharging steamand grit carried thereby incident to the cleaning of a boiler. The greatefficiency of my form of valve is due to the fact that the valve propernever moves olf of its seat, but always remains in close engagementtherewith, being simply rotated upon its seat in order to bring a portleading from the interior of the valve into registration with a port inthe casing.

Referring in detail to the drawings, l designates the main or bodyportion of my valve, which is provided with an interior bore the majorportion whereof is conical in form, while the outer end is cylindrical.The conical part of the bore is coincident in size with the conical bodyportion 2 of my valve proper, while the stem 3, made integral with myvalve, is cylindrical in form, and therefore snugly ts in thecylindrical bore in the outer end of the body portion 1, a suitablewrench-surface 4 being formed upon the body portion 1 to facilitate thecontrol thereof, as will be hereinafter set forth.

The body portion l of my valve is provided with an internally-threadedvalve or extension 5, adapted to receive the threaded inner end of theanchoring portion or extension 6 of my valve, the extreme end of saidextension being slightly conical and threaded, as indicated by thenumeral 7 said threaded terminal being designed to be seated in athreaded hole in the boiler or other point where the valve is to belocated, a wrench-face 8 being formed to facilitate the seating thereof.The inner end of the anchoring member 6 is reduced in size, as indicatedby the numeral 9, and this reduced portion being threaded fits securelywithin the flange 5, as before stated, a suitable annular recess beingformed in the extreme inner end of the extension 9 to receive the end ofthe valve 2. It will thus be observed that the valve 2 is surrounded byan eXteriorly-threaded flange, as designated by the numeral 10. I alsoprovide the annular groove or recess 11 surrounding the inner end of theconical valve 2, said recess being desirable as a seat for packing ifdeemed necessary.

It will be observed by reference to the drawings that the conicalvalve-body 2 is provided with a bore 12, which registers with the bore13 in the anchoring member 6. It will be furthermore seen that I haveprovided a discharging-port 14, extending' through the wall of the valveand communicating with the bore 12 and adapted to be brought into or outof registration with a corresponding bore or exitport in the casing orbody portion 1, said part preferably having threaded therein thedischarging-nipple 15.

The anchoring extension is provided with a nipple or extension 6, whichmay be formed integral with thc extension 6 or may be threaded into theend of the bore 13. This device is provided with a bore of substantiallythe same size as the bore 13 and is designed to form a continuationthereof. The outer periphery of the extension 6XL may be conical orcylindrical and in all cases is designed to snugly lit within the bore12.

From the foregoing description it is therefore obvious that my valve maybe instantly opened or closed by simply turning the valve 2 upon itsseat, and since said valve always remains squarely in engagement withits seat it will be impossible for sediment, grit, or the like carriedby the steam, water, or other liquid passing through the valve to enterbetween' the seat and valve, thereby insuring that the life andusefulness of the valve will be long preserved.

Obviously that class of valves or gage-cocks wherein the valve properrises off of its seat to permit the escape of the steam or the likearound it will cause more or less deposit of sediment and grit betweenthe valve and seat, and thus destroy the prepared surfaces thereof andincidentally cause a leakage, it being found in practice that agage-cock of ordinary construction willvery soon begin to leak after thesame has been used but a comparatively short time, whereas in the use ofmy form of valve the pressure of the steam within the boiler willnaturally tend to hold the valve truly upon its seat, when a simplerotation or partial rotation of the valve will cause the registration ofthe discharging-ports in the valve and casing, thereby enabling thevalve to be instantly opened and as quickly closed.

If it should be deemed desirable, a suitable gasket-seat, as an annulargroove, may be provided in the inner end of the extension 9 and thegasket 16 located therein, said gasket being designed to bear directlyagainst the inner end of the conical valve-body 2, as clearly shown inFig. 1.

In some instances the gasket-seat in the end of the extension 9 may bereplaced with an annular rib or extension 17, designed to fit acorresponding annular recess provided'in the end of the valve, and it istherefore obvious that in case the valve and its seat should become wornthe inner end of the valve will withdraw from engagement withthe face ofthe extension 9; but said annular rib or eX- tension 17 will guardagainst the possibility of the escape of steam or the like between saidparts. It is thought, however, that both the extension or rib 17 and thegasket 16 may be entirely dispensed with and reliance placed solely uponthe ground tightly-fitting faces of the valve and valve-seat for theexclusion or escape of steam or the like, and I therefore reserve theright to make my valve or gage-cock with or without said rib orgasketseat, as I may lind most desirable in practice.

The valve-stem 3 being properly shaped at its outer end is designed toreceive a handle or controlling-wheel 18, whereby the valve may bereadily opened or closed, as desired, a suitable stop-pin 19 beinglocated in the valve-stem and designed to engagea shoulder 20, formedinthe outer end of the body portion 1, when the valve is turned open orclosed.

It will thus be seen that I have provided a very simple form of valve orgage-cock which will be found useful for a great variety of purposes notalone for the control of steam, but, as before stated, it will be foundespecially useful upon water-mains, as for opening and closing hydrantsin case of fire, and also for use upon oil-pumps, where a large amountof grit, sand, or the like must pass through the Valve. Since,therefore, the steam or the like controlled by my valve does not come incontact with the meeting surfaces of the valve and valve-seat, the wearupon the valve is almost wholly eliminated.

While I have described the preferred combination and construction ofparts deemed necessary in materializing my invention, I desire tocomprehend in this application all substantial equivalents andsubstitutes that may be regarded as falling fairly within the scope ofmy invention.

Having thus fully described the construction and manner of using myimproved valve or gage-cock, further description is` deemed unnecessary.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a gage-cock, the combination with a body having a central bore,conical a portion of its length, and an anchoring member having a seatthereon and bore throughout its length, of a conical valve to it saidbore in the body portion, said valve having a hollow interior,

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said valve and body portion having exit-ports adapted to register, and anipple carried by said anchoring member adapted to take into and fit theinterior opening in said valve wherebygrit, &c. will be kept from thevalveseat, as Set forth.

2. 1n a gage-cock, the combination with a body portion and an anchoringmember having a valve-seat, of a valve having a hollow interior adaptedto register with the bore in the anchoring member, of a nipple having abore, said nipple being secured to said anchoring member and extendinginto the valve, said valve and body portion having suitable portsadapted to register when desired, as set forth.

3. The herein-described gage-cock, comprising a body portion, having acentral bore, a valve located therein, an anchoring member having a seatfor Asaid valve and projections carried by said anchoring member adaptedto take into suitable openings in said valve whereby the leakage ofsteam between said valve and its seat will be prevented, as set forth.

4. A gage-cock, comprising a body portion having a central bore, a valvefitting in said bore and having a hollow interior, an anchoring memberhaving a valve-seat and a bore throughout its entire length, and atubular extension adapted to take into and register with the hollowinterior of said valve whereby the bore in said anchoring member will beelongated and the steam-exit point carried beyond the junction of saidvalve and its seat, substantially as set forth.

In testimony whereof I have signed my name to this specication in thepresence of two subscribing witnesses.

SAMUEL J. DUNLOP.

